Furse ESP Cat-5 Series Technical Note

ESP Cat-5 & Cat-6 Series
Combined Category D, C, B tested protector (to BS EN 61643)
suitable to protect twisted pair Ethernet networks, including
Power over Ethernet (PoE), with RJ45 connections. For use at
boundaries up to LPZ 0
B
service entrance location) through to LPZ 3 to protect sensitive
electronic equipment.
Features and benefits
Suitable for systems signalling on up to eight wires of either shielded

or unshielded twisted pair cable
Very low let-through voltage (enhanced protection to BS EN 62305)

between all lines - Full Mode protection
Full mode design capable of handling partial lightning currents as well

as allowing continual operation of protected equipment
Repeated protection in lightning intense environments

Unlike some competing devices, the ethernet SPDs provide effective

protection without impairing the system's normal operation
Low capacitance circuitry prevents the start-up signal degradation

associated with other types of network protector
Low in-line resistance minimises unnecessary reductions in signal

strength to maximise signalling distance
Sturdy ABS housing with convenient holes for flat mounting, or

vertically via TS35 'Top Hat' DIN rail
Substantial earth connection to enable effective earthing

Supplied with short (50 cm) Cat-5e UTP or Cat-6 STP cable to enable

neat installation
Application
Use these protectors on network cables that travel between buildings to
prevent damage to equipment, e.g. computers, servers, repeaters and hubs.
Suitable for computer networks up to Cat-6 cabling.
To protect up to 100baseT and up to 1000baseT networks with

Cat-5/Cat-5e cabling use ESP Cat-5e and ESP Cat-5e/Gb respectively
To protect up to 10GbaseT networks with Cat-6 cabling use ESP Cat-6

To protect up to 100baseT, 1000baseT and 10GbaseT Power over

Ethernet (PoE) networks use ESP Cat-5e/PoE, ESP Cat-5e/Gb/PoE and
ESP Cat-6/PoE respectively
For further application information, see separate Application Note AN004
(contact us for a copy).
Furse, Wilford Road, Nottingham, NG2 1E • Tel: +44 (0)115 964 3700 • Email: enquiry@furse.com • Web: www.furse.com
to protect against flashover (typically the
NEW
Installation
Connect in series with the network
cable, either:
a) near to where it enters or
leaves the building, or
b) as it enters the network hub,
or
c) close to the equipment being
protected
This should be close to the system's
earth star point (to enable a good
connection to earth).
DIRTY
ELECTRONIC SYSTEMS PROTECTION
Plug-in Lightning Barrier
Wilford Road,
Nottingham,
NG2 1EB, UK
From
line equipment
Earth
Plug-in series connection
A Furse ESP Cat-5e/Gb protecting a hub from
transient overvoltages on a network
connection with another building
Technical note
The interfaces used in Ethernet
networks incorporate an
isolation transformer which
gives these systems an inbuilt
immunity to transients
between line and earth of
1,500 Volts or more.
Accessories
ESP CAT5e/UTP-1
1 metre cable with unshielded
RJ45 connections
ESP CAT6/STP-1
1 metre screened cable with
shielded RJ45 connections
CLEAN
To